* Regression on Linux 6.0-rc1
@ 2022-08-16 12:57 Ron Economos
2022-08-16 14:58 ` Dao Lu
2022-08-16 15:44 ` Anup Patel
0 siblings, 2 replies; 4+ messages in thread
From: Ron Economos @ 2022-08-16 12:57 UTC (permalink / raw)
To: linux-riscv; +Cc: conor.dooley, palmer, daolu, heiko
The following Oops occurs on Linux 6.0-rc1 on the HiFive Unmatched. This
is with gcc 11.2.0 and binutils 2.38 (from
https://github.com/riscv-collab/riscv-gnu-toolchain).
Begin: Loading essential drivers ... [ 14.774748] Unable to handle
kernel paging request at virtual address ffffffff813cdc90
[ 14.781976] Oops [#1]
[ 14.784163] Modules linked in: raid6_pq(+) libcrc32c raid1 raid0
multipath linear da9063_regulator
[ 14.800763] CPU: 1 PID: 248 Comm: modprobe Not tainted 6.0.0-rc1 #1
[ 14.806747] Hardware name: SiFive HiFive Unmatched A00 (DT)
[ 14.812307] epc : jump_label_module_notify+0x1bc/0x270
[ 14.817430] ra : jump_label_module_notify+0x19a/0x270
[ 14.822555] epc : ffffffff801b804c ra : ffffffff801b802a sp :
ffffffc80424bc0
[ 14.829766] gp : ffffffff81a2d7b8 tp : ffffffd895ae1980 t0 :
ffffffd88067e20
[ 14.836975] t1 : 6f1d98585898183f t2 : ffffffdbfed19e58 s0 :
ffffffc80424bc0
[ 14.844185] s1 : ffffffff813cdc88 a0 : 0000000000000000 a1 :
000000000000000
[ 14.851394] a2 : 0000000000000000 a3 : ffffffff01c77000 a4 :
000000000000000
[ 14.858602] a5 : 0000000000000000 a6 : 0000000000ff0000 a7 :
000000000000021
[ 14.865812] s2 : ffffffff01c73000 s3 : ffffffff01c740c0 s4 :
ffffffd88067e80
[ 14.873021] s5 : ffffffff01c73010 s6 : 0000000000000dc0 s7 :
ffffffff813cdf0
[ 14.880230] s8 : ffffffd88067e282 s9 : ffffffff01c73008 s10:
000000000000002
[ 14.887439] s11: ffffffc80424bd50 t3 : e26cb9592a0e8a69 t4 :
000000800000000
[ 14.894649] t5 : 000000ff00000000 t6 : ffffffd8819ac4a0
[ 14.899945] status: 0000000200000120 badaddr: ffffffff813cdc90 cause:
000000f
[ 14.907853] [<ffffffff8004055a>]
blocking_notifier_call_chain_robust+0x72/0x8
[ 14.915061] [<ffffffff800a1dfc>] load_module+0x17bc/0x1e98
[ 14.920531] [<ffffffff800a2718>] __do_sys_finit_module+0x98/0x100
[ 14.926611] [<ffffffff800a27a4>] sys_finit_module+0x24/0x30
[ 14.932170] [<ffffffff80003ca6>] ret_from_syscall+0x0/0x2
[ 14.937680] ---[ end trace 0000000000000000 ]---
Segmentation fault
Manually bisected to this commit:
arch/riscv: add Zihintpause support
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8eb060e10185cfc97ef0200d197ec246ba0f9f8c
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* Re: Regression on Linux 6.0-rc1
2022-08-16 12:57 Regression on Linux 6.0-rc1 Ron Economos
@ 2022-08-16 14:58 ` Dao Lu
2022-08-16 15:46 ` Conor.Dooley
2022-08-16 15:44 ` Anup Patel
1 sibling, 1 reply; 4+ messages in thread
From: Dao Lu @ 2022-08-16 14:58 UTC (permalink / raw)
To: Ron Economos
Cc: open list:RISC-V ARCHITECTURE, conor.dooley, Palmer Dabbelt,
Heiko Stübner
I will take a look at it, sorry about that.
Thanks,
Dao
On Tue, Aug 16, 2022 at 5:58 AM Ron Economos <re@w6rz.net> wrote:
>
> The following Oops occurs on Linux 6.0-rc1 on the HiFive Unmatched. This
> is with gcc 11.2.0 and binutils 2.38 (from
> https://github.com/riscv-collab/riscv-gnu-toolchain).
>
> Begin: Loading essential drivers ... [ 14.774748] Unable to handle
> kernel paging request at virtual address ffffffff813cdc90
> [ 14.781976] Oops [#1]
> [ 14.784163] Modules linked in: raid6_pq(+) libcrc32c raid1 raid0
> multipath linear da9063_regulator
> [ 14.800763] CPU: 1 PID: 248 Comm: modprobe Not tainted 6.0.0-rc1 #1
> [ 14.806747] Hardware name: SiFive HiFive Unmatched A00 (DT)
> [ 14.812307] epc : jump_label_module_notify+0x1bc/0x270
> [ 14.817430] ra : jump_label_module_notify+0x19a/0x270
> [ 14.822555] epc : ffffffff801b804c ra : ffffffff801b802a sp :
> ffffffc80424bc0
> [ 14.829766] gp : ffffffff81a2d7b8 tp : ffffffd895ae1980 t0 :
> ffffffd88067e20
> [ 14.836975] t1 : 6f1d98585898183f t2 : ffffffdbfed19e58 s0 :
> ffffffc80424bc0
> [ 14.844185] s1 : ffffffff813cdc88 a0 : 0000000000000000 a1 :
> 000000000000000
> [ 14.851394] a2 : 0000000000000000 a3 : ffffffff01c77000 a4 :
> 000000000000000
> [ 14.858602] a5 : 0000000000000000 a6 : 0000000000ff0000 a7 :
> 000000000000021
> [ 14.865812] s2 : ffffffff01c73000 s3 : ffffffff01c740c0 s4 :
> ffffffd88067e80
> [ 14.873021] s5 : ffffffff01c73010 s6 : 0000000000000dc0 s7 :
> ffffffff813cdf0
> [ 14.880230] s8 : ffffffd88067e282 s9 : ffffffff01c73008 s10:
> 000000000000002
> [ 14.887439] s11: ffffffc80424bd50 t3 : e26cb9592a0e8a69 t4 :
> 000000800000000
> [ 14.894649] t5 : 000000ff00000000 t6 : ffffffd8819ac4a0
> [ 14.899945] status: 0000000200000120 badaddr: ffffffff813cdc90 cause:
> 000000f
> [ 14.907853] [<ffffffff8004055a>]
> blocking_notifier_call_chain_robust+0x72/0x8
> [ 14.915061] [<ffffffff800a1dfc>] load_module+0x17bc/0x1e98
> [ 14.920531] [<ffffffff800a2718>] __do_sys_finit_module+0x98/0x100
> [ 14.926611] [<ffffffff800a27a4>] sys_finit_module+0x24/0x30
> [ 14.932170] [<ffffffff80003ca6>] ret_from_syscall+0x0/0x2
> [ 14.937680] ---[ end trace 0000000000000000 ]---
> Segmentation fault
>
> Manually bisected to this commit:
>
> arch/riscv: add Zihintpause support
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8eb060e10185cfc97ef0200d197ec246ba0f9f8c
>
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Regression on Linux 6.0-rc1
2022-08-16 12:57 Regression on Linux 6.0-rc1 Ron Economos
2022-08-16 14:58 ` Dao Lu
@ 2022-08-16 15:44 ` Anup Patel
1 sibling, 0 replies; 4+ messages in thread
From: Anup Patel @ 2022-08-16 15:44 UTC (permalink / raw)
To: Ron Economos; +Cc: linux-riscv, conor.dooley, palmer, daolu, heiko
On Tue, Aug 16, 2022 at 6:29 PM Ron Economos <re@w6rz.net> wrote:
>
> The following Oops occurs on Linux 6.0-rc1 on the HiFive Unmatched. This
> is with gcc 11.2.0 and binutils 2.38 (from
> https://github.com/riscv-collab/riscv-gnu-toolchain).
>
> Begin: Loading essential drivers ... [ 14.774748] Unable to handle
> kernel paging request at virtual address ffffffff813cdc90
> [ 14.781976] Oops [#1]
> [ 14.784163] Modules linked in: raid6_pq(+) libcrc32c raid1 raid0
> multipath linear da9063_regulator
> [ 14.800763] CPU: 1 PID: 248 Comm: modprobe Not tainted 6.0.0-rc1 #1
> [ 14.806747] Hardware name: SiFive HiFive Unmatched A00 (DT)
> [ 14.812307] epc : jump_label_module_notify+0x1bc/0x270
> [ 14.817430] ra : jump_label_module_notify+0x19a/0x270
> [ 14.822555] epc : ffffffff801b804c ra : ffffffff801b802a sp :
> ffffffc80424bc0
> [ 14.829766] gp : ffffffff81a2d7b8 tp : ffffffd895ae1980 t0 :
> ffffffd88067e20
> [ 14.836975] t1 : 6f1d98585898183f t2 : ffffffdbfed19e58 s0 :
> ffffffc80424bc0
> [ 14.844185] s1 : ffffffff813cdc88 a0 : 0000000000000000 a1 :
> 000000000000000
> [ 14.851394] a2 : 0000000000000000 a3 : ffffffff01c77000 a4 :
> 000000000000000
> [ 14.858602] a5 : 0000000000000000 a6 : 0000000000ff0000 a7 :
> 000000000000021
> [ 14.865812] s2 : ffffffff01c73000 s3 : ffffffff01c740c0 s4 :
> ffffffd88067e80
> [ 14.873021] s5 : ffffffff01c73010 s6 : 0000000000000dc0 s7 :
> ffffffff813cdf0
> [ 14.880230] s8 : ffffffd88067e282 s9 : ffffffff01c73008 s10:
> 000000000000002
> [ 14.887439] s11: ffffffc80424bd50 t3 : e26cb9592a0e8a69 t4 :
> 000000800000000
> [ 14.894649] t5 : 000000ff00000000 t6 : ffffffd8819ac4a0
> [ 14.899945] status: 0000000200000120 badaddr: ffffffff813cdc90 cause:
> 000000f
> [ 14.907853] [<ffffffff8004055a>]
> blocking_notifier_call_chain_robust+0x72/0x8
> [ 14.915061] [<ffffffff800a1dfc>] load_module+0x17bc/0x1e98
> [ 14.920531] [<ffffffff800a2718>] __do_sys_finit_module+0x98/0x100
> [ 14.926611] [<ffffffff800a27a4>] sys_finit_module+0x24/0x30
> [ 14.932170] [<ffffffff80003ca6>] ret_from_syscall+0x0/0x2
> [ 14.937680] ---[ end trace 0000000000000000 ]---
> Segmentation fault
>
> Manually bisected to this commit:
>
> arch/riscv: add Zihintpause support
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8eb060e10185cfc97ef0200d197ec246ba0f9f8c
We see this crash for any loadable module which uses
cpu_relax(). In fact, KVM RISC-V module loading is also
broken.
Regards,
Anup
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* Re: Regression on Linux 6.0-rc1
2022-08-16 14:58 ` Dao Lu
@ 2022-08-16 15:46 ` Conor.Dooley
0 siblings, 0 replies; 4+ messages in thread
From: Conor.Dooley @ 2022-08-16 15:46 UTC (permalink / raw)
To: daolu, re; +Cc: linux-riscv, palmer, heiko
On 16/08/2022 15:58, Dao Lu wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
>
> I will take a look at it, sorry about that.
>
> Thanks,
> Dao
>
> On Tue, Aug 16, 2022 at 5:58 AM Ron Economos <re@w6rz.net> wrote:
>>
>> The following Oops occurs on Linux 6.0-rc1 on the HiFive Unmatched. This
>> is with gcc 11.2.0 and binutils 2.38 (from
>> https://github.com/riscv-collab/riscv-gnu-toolchain).
>>
>> Begin: Loading essential drivers ... [ 14.774748] Unable to handle
>> kernel paging request at virtual address ffffffff813cdc90
>> [ 14.781976] Oops [#1]
>> [ 14.784163] Modules linked in: raid6_pq(+) libcrc32c raid1 raid0
>> multipath linear da9063_regulator
>> [ 14.800763] CPU: 1 PID: 248 Comm: modprobe Not tainted 6.0.0-rc1 #1
>> [ 14.806747] Hardware name: SiFive HiFive Unmatched A00 (DT)
>> [ 14.812307] epc : jump_label_module_notify+0x1bc/0x270
>> [ 14.817430] ra : jump_label_module_notify+0x19a/0x270
>> [ 14.822555] epc : ffffffff801b804c ra : ffffffff801b802a sp :
>> ffffffc80424bc0
>> [ 14.829766] gp : ffffffff81a2d7b8 tp : ffffffd895ae1980 t0 :
>> ffffffd88067e20
>> [ 14.836975] t1 : 6f1d98585898183f t2 : ffffffdbfed19e58 s0 :
>> ffffffc80424bc0
>> [ 14.844185] s1 : ffffffff813cdc88 a0 : 0000000000000000 a1 :
>> 000000000000000
>> [ 14.851394] a2 : 0000000000000000 a3 : ffffffff01c77000 a4 :
>> 000000000000000
>> [ 14.858602] a5 : 0000000000000000 a6 : 0000000000ff0000 a7 :
>> 000000000000021
>> [ 14.865812] s2 : ffffffff01c73000 s3 : ffffffff01c740c0 s4 :
>> ffffffd88067e80
>> [ 14.873021] s5 : ffffffff01c73010 s6 : 0000000000000dc0 s7 :
>> ffffffff813cdf0
>> [ 14.880230] s8 : ffffffd88067e282 s9 : ffffffff01c73008 s10:
>> 000000000000002
>> [ 14.887439] s11: ffffffc80424bd50 t3 : e26cb9592a0e8a69 t4 :
>> 000000800000000
>> [ 14.894649] t5 : 000000ff00000000 t6 : ffffffd8819ac4a0
>> [ 14.899945] status: 0000000200000120 badaddr: ffffffff813cdc90 cause:
>> 000000f
>> [ 14.907853] [<ffffffff8004055a>]
>> blocking_notifier_call_chain_robust+0x72/0x8
>> [ 14.915061] [<ffffffff800a1dfc>] load_module+0x17bc/0x1e98
>> [ 14.920531] [<ffffffff800a2718>] __do_sys_finit_module+0x98/0x100
>> [ 14.926611] [<ffffffff800a27a4>] sys_finit_module+0x24/0x30
>> [ 14.932170] [<ffffffff80003ca6>] ret_from_syscall+0x0/0x2
>> [ 14.937680] ---[ end trace 0000000000000000 ]---
>> Segmentation fault
FWIW I got one of these while trying out the d1 patchset yesterday :)
[ 5.856640] Unable to handle kernel paging request at virtual address ffffffff80dd4cb0
[ 5.865027] Oops [#1]
[ 5.867420] Modules linked in: drm(+) i2c_core drm_panel_orientation_quirks backlight
[ 5.875649] CPU: 0 PID: 86 Comm: modprobe Not tainted 6.0.0-rc1-00030-g9c1ba73cde81-dirty #1
[ 5.884491] Hardware name: Allwinner D1 Nezha (DT)
[ 5.889505] epc : jump_label_module_notify+0x19e/0x230
[ 5.894915] ra : jump_label_module_notify+0x172/0x230
[ 5.900298] epc : ffffffff80107182 ra : ffffffff80107156 sp : ffffffc8041f3c10
[ 5.907872] gp : ffffffff812f7ad0 tp : ffffffd80191c500 t0 : ffffffd803561bc0
[ 5.915444] t1 : 0000000000000000 t2 : 00000000013b3e62 s0 : ffffffc8041f3c70
[ 5.923025] s1 : ffffffff80dd4ca8 a0 : 0000000000000000 a1 : 0000000000000000
[ 5.930614] a2 : 0000000000000000 a3 : ffffffff01483000 a4 : 0000000000000000
[ 5.938178] a5 : 0000000000000000 a6 : ffffffff80106882 a7 : ffffffff80106a6e
[ 5.945759] s2 : ffffffff013d3000 s3 : ffffffff013d55c0 s4 : ffffffd803561b40
[ 5.953340] s5 : ffffffff013d3010 s6 : 0000000000000dc0 s7 : ffffffff80dd4f90
[ 5.960930] s8 : ffffffd803561b82 s9 : ffffffff013d3008 s10: ffffffff013d55c8
[ 5.968511] s11: ffffffc8041f3d50 t3 : 0000000000000001 t4 : fefefefefefefeff
[ 5.976093] t5 : 0000000000000001 t6 : 0000000000040000
[ 5.981662] status: 0000000200000120 badaddr: ffffffff80dd4cb0 cause: 000000000000000f
[ 5.989954] [<ffffffff8002c96c>] blocking_notifier_call_chain_robust+0x5a/0xc2
[ 5.997533] [<ffffffff80073f9a>] load_module+0x10fc/0x17b6
[ 6.003299] [<ffffffff80074824>] __do_sys_finit_module+0x90/0xc8
[ 6.009621] [<ffffffff80074880>] sys_finit_module+0x10/0x18
[ 6.015466] [<ffffffff8000330a>] ret_from_syscall+0x0/0x2
[ 6.021486] ---[ end trace 0000000000000000 ]---
[ 15.757304] ------------[ cut here ]------------
I don't see it on any of my PolarFire SoC configs though, just I am
just not loading any modules that trigger it..
Thanks,
Conor.
>>
>> Manually bisected to this commit:
>>
>> arch/riscv: add Zihintpause support
>>
>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8eb060e10185cfc97ef0200d197ec246ba0f9f8c
>>
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2022-08-16 12:57 Regression on Linux 6.0-rc1 Ron Economos
2022-08-16 14:58 ` Dao Lu
2022-08-16 15:46 ` Conor.Dooley
2022-08-16 15:44 ` Anup Patel
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